We need to upgrade a channel to a higher bandwidth. How is the rate improved if

Question

We need to upgrade a channel to a higher bandwidth. How is the rate improved if we double the bandwidth?

data rate remains the same

data rate is quadrupled

None of the above

data rate is doubled

Question 42

end

regional

tandem

local

43.In a --------------network , there is no resource reservation; resources are allocated on demand

circuit switched

packet switched

all of the above

none of the above

A signal travels from point A to point B. At point A, the signal power is 100 W. At point B, the power is 90 W. What is the attenuation in decibels?

10

0.46

-10

-0.46

data rate remains the same

data rate is quadrupled

None of the above

data rate is doubled

Question 42

Which of the following is the ???? switch shown in figure below ?

end

regional

tandem

local

43.In a --------------network , there is no resource reservation; resources are allocated on demand

circuit switched

packet switched

all of the above

none of the above

A signal travels from point A to point B. At point A, the signal power is 100 W. At point B, the power is 90 W. What is the attenuation in decibels?

10

0.46

-10

-0.46

Explanation / Answer

41) By doubling the bandwidth (2B), the data rate is doubled.

42) ?? Dont see the Image

43.In a ----Packet Switching----------network , there is no resource reservation; resources are allocated on demand

44) Answer : -0.46

Explanation:

A = 100W
B = 90W

Attenuation in dB = 10 log10 0.9 = 10 x -0.046 = –0.46 dB



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